What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines and Delta are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 5 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of February 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$554 Cheap Flights from Louisville to Sydney in 2026

Q: What is the typical price of a round-trip flight between Louisville and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,194 to $1,546. The lowest price recently found on this route was $1,139.

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Find the cheapest flights from Louisville to Sydney

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:55 pm - 6:55 am

SDF

SYD

27h 00m

2 stops

9:30 am - 7:16 pm

SYD

SDF

23h 46m

2 stops

$1,139United Airlines

Tue, Jun 9 - Wed, Jun 17

4:42 pm - 6:50 am

SDF

SYD

24h 08m

2 stops

9:15 am - 9:19 pm

SYD

SDF

26h 04m

2 stops

$1,174Delta

Tue, Apr 21 - Sun, May 10

10:32 am - 6:50 am

SDF

SYD

30h 18m

2 stops

9:15 am - 11:59 pm

SYD

SDF

28h 44m

2 stops

$1,175Delta

Sun, May 17 - Sun, May 24

3:30 pm - 7:00 am

SDF

SYD

25h 30m

2 stops

10:20 am - 8:14 pm

SYD

SDF

23h 54m

2 stops

$1,187United Airlines

Sun, May 31 - Fri, Jul 31

3:15 pm - 9:05 am

SDF

SYD

25h 50m

2 stops

11:50 am - 7:51 pm

SYD

SDF

23h 01m

1 stop

$1,230United Airlines

Sat, Mar 7 - Sat, Mar 14

7:30 am - 7:00 am

SDF

SYD

33h 30m

2 stops

9:30 am - 10:15 pm

SYD

SDF

26h 45m

2 stops

$1,234United Airlines

Thu, Jul 9 - Fri, Jul 17

8:05 am - 7:30 am

SDF

SYD

32h 25m

2 stops

9:40 am - 10:43 pm

SYD

SDF

28h 03m

2 stops

$1,274Delta

Fri, Mar 20 - Fri, Mar 27

3:30 pm - 7:00 am

SDF

SYD

24h 30m

1 stop

11:50 am - 7:51 pm

SYD

SDF

23h 01m

1 stop

$1,277United Airlines

Fri, Mar 20 - Fri, Mar 27

3:30 pm - 9:15 am

SDF

SYD

25h 45m

2 stops

11:50 am - 7:51 pm

SYD

SDF

24h 01m

1 stop

$1,278United Airlines

Thu, Feb 19 - Sun, Feb 22

3:25 pm - 7:00 am

SDF

SYD

25h 35m

2 stops

9:30 am - 7:16 pm

SYD

SDF

23h 46m

2 stops

$1,281United Airlines

Tue, Jun 9 - Wed, Jun 17

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Jun 9

SDF7:43 pmLouisville Intl

21h 12m

1 stop

SYD6:55 amSydney Kingsford Smith

Jun 17

SYD12:00 pmSydney Kingsford Smith

25h 25m

1 stop

SDF11:25 pmLouisville Intl

$1,801

Qantas Airways

Jun 9

SDF7:43 pmLouisville Intl

21h 12m

1 stop

SYD6:55 amSydney Kingsford Smith

Jun 17

SYD12:00 pmSydney Kingsford Smith

25h 25m

1 stop

SDF11:25 pmLouisville Intl

$1,802

Qantas Airways

May 17

SDF7:55 pmLouisville Intl

21h 00m

1 stop

SYD6:55 amSydney Kingsford Smith

May 24

SYD12:00 pmSydney Kingsford Smith

19h 31m

1 stop

SDF5:31 pmLouisville Intl

$1,803

Air Canada flights from Louisville to Sydney

Our best Air Canada deals on Louisville to Sydney flight tickets

Air Canada

May 17

SDF5:50 amLouisville Intl

35h 30m

3 stops

SYD7:20 amSydney Kingsford Smith

May 24

SYD9:20 amSydney Kingsford Smith

38h 25m

2 stops

SDF9:45 amLouisville Intl

$1,828

Air Canada

May 17

SDF5:50 amLouisville Intl

35h 30m

3 stops

SYD7:20 amSydney Kingsford Smith

May 24

SYD9:20 amSydney Kingsford Smith

41h 40m

3 stops

SDF1:00 pmLouisville Intl

$2,022

Air Canada

Jun 9

SDF9:00 amLouisville Intl

32h 20m

3 stops

SYD7:20 amSydney Kingsford Smith

Jun 17

SYD9:20 amSydney Kingsford Smith

24h 54m

2 stops

SDF8:14 pmLouisville Intl

$2,085

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

1:55 pm-6:55 am

2 stops27h 00m

Sydney Kingsford Smith

Wed 6/17

9:30 am-7:16 pm

2 stops23h 46m

$1,139

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 4/21

4:42 pm-6:50 am

2 stops24h 08m

Sydney Kingsford Smith

Sun 5/10

9:15 am-9:19 pm

2 stops26h 04m

$1,174

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 5/17

10:32 am-6:50 am

2 stops30h 18m

Sydney Kingsford Smith

Sun 5/24

9:15 am-11:59 pm

2 stops28h 44m

$1,175

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sun 5/31

3:30 pm-7:00 am

2 stops25h 30m

Sydney Kingsford Smith

Fri 7/31

10:20 am-8:14 pm

2 stops23h 54m

$1,187

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Sat 3/7

3:15 pm-9:05 am

2 stops25h 50m

Sydney Kingsford Smith

Sat 3/14

11:50 am-7:51 pm

1 stop23h 01m

$1,230

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 7/9

7:30 am-7:00 am

2 stops33h 30m

Sydney Kingsford Smith

Fri 7/17

9:30 am-10:15 pm

2 stops26h 45m

$1,234

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 3/20

8:05 am-7:30 am

2 stops32h 25m

Sydney Kingsford Smith

Fri 3/27

9:40 am-10:43 pm

2 stops28h 03m

$1,274

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Fri 3/20

3:30 pm-7:00 am

1 stop24h 30m

Sydney Kingsford Smith

Fri 3/27

11:50 am-7:51 pm

1 stop23h 01m

$1,277

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 2/19

3:30 pm-9:15 am

2 stops25h 45m

Sydney Kingsford Smith

Sun 2/22

11:50 am-7:51 pm

1 stop24h 01m

$1,278

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 6/9

3:25 pm-7:00 am

2 stops25h 35m

Sydney Kingsford Smith

Wed 6/17

9:30 am-7:16 pm

2 stops23h 46m

$1,281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,142. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month June is also very affordable. Most momondo users find prices during this month for around $1,229.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	23h 30m
Direct flights	None

The fastest flight from Louisville to Sydney takes 23h 30m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 23h 30m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of February 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (71% of total bookings). The next most popular airline is Delta (29%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $973	Free Cancellation	Rating 7.4 9,245 reviews		Search United Airlines flights
Delta	PriceFrom $985	Free Cancellation	Rating 7.9 8,162 reviews		Search Delta flights

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Manly

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Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

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Cheap flights from Louisville to Sydney from $554

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Louisville to Sydney

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

United Airlines and Delta are the most popular carriers operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

Direct flights

How far is Louisville Intl to Sydney Kingsford Smith by plane?

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

How can momondo help me find flights from Louisville to Sydney?

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Australia

Airports servicing New South Wales

Fly your favorite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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